Scrutinizer Auto-Fixes

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Spomky-Labs/oauth2-server/inspections/f3a1f610-f6e5-4be8-9cb8-0c75c647e70b

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Merge pull request #2 from Spomky/scrutinizer-patch-2

Scrutinizer Auto-Fixes